GC-MS ANALYSIS AND ANTIFUNGAL ACTIVITY OF METHANOLIC ROOT EXTRACT OF Chenopodium album AGAINST Sclerotium rolfsii

  • ALI A
  • JAVAID A
  • SHOAIB A
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Abstract

ABSTRACT Sclerotium rolfsii is a soil-borne fungal plant pathogen that causes diseases in more than 500 plant species. Chemical fungicides used to control this disease cause environmental pollution, therefore, plant derived compounds can be used as alternative to synthetic fungicides to reduce environmental pollution. Chenopodium album is a weed of family Chenopodiaceae that is used as food and also has medicinal importance. In the present study, antifungal activity of methanolic root extract of C. album was evaluated against S. rolfsii using six concentrations viz. 0.5, 1.0, 1.5, 2.0, 2.5 and 3.0 g 100 mL-1 amended in malt extract as growth medium. All the root extract concentrations significantly reduced fungal biomass by 15-58% over control. Gas chromatography-mass spectrometry (GC-MS) analysis of the methanolic root extract of C. album was performed. Six compounds were identified in methanolic root extract through GC-MS analysis. The most abundant compound was 1,2-benzenedicarboxylic acid, mono(2-ethylhexyl) ester (58.56%) followed by 9-octadecenoic acid (Z)-, methyl ester (12.75%) and 9-octadecenoic acid (Z)-, methyl ester (10.27%), which might be responsible for antifungal activity of methanolic root extract of C. album.RESUMO Sclerotium rolfsii é um patógeno vegetal fungoso do solo que causa doenças em mais de 500 espécies de plantas. Os fungicidas químicos utilizados para controlar essa doença causam poluição ambiental. Portanto, compostos derivados de plantas podem ser usados como alternativa aos fungicidas sintéticos para reduzir a poluição ambiental. Chenopodium album é uma planta daninha da família Chenopodiaceae que é utilizada como alimento e também tem importância medicinal. No presente estudo, a atividade antifúngica do extrato metanólico de raiz C. album foi avaliada diante de S. rolfsii utilizando seis concentrações, ou seja, 0,5, 1,0, 1,5, 2,0, 2,5 e 3,0 g 100 mL-1, alteradas em extrato de malte como meio de crescimento. Todas as concentrações de extrato de raiz reduziram significativamente a biomassa fúngica em 15-58% em relação ao controle. Foi feita a análise por cromatografia gasosa com espectrômetro de massa (GCMS) do extrato metanólico de raiz de C. album. Seis compostos foram identificados em extrato metanólico de raiz por meio de análise por GC-MS. O composto mais abundante foi o ácido 1,2-benzenodicarboxílico, mono (2-etil-hexil) éster (58,56%), seguido de ácido 9-octadecenoico (Z)-, éster metílico (12,75%), e ácido 9-octadecenoico (Z)-, éster metílico (10,27%), o que pode ser responsável pela atividade antifúngica de extrato metanólico de raiz de C. album.

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ALI, A., JAVAID, A., & SHOAIB, A. (2017). GC-MS ANALYSIS AND ANTIFUNGAL ACTIVITY OF METHANOLIC ROOT EXTRACT OF Chenopodium album AGAINST Sclerotium rolfsii. Planta Daninha, 35(0). https://doi.org/10.1590/s0100-83582017350100046

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